# AddRemotePackageReferenceAtBranch(string, string)

> Adds a reference to the remote package at the given branch.

## Definition

* **Type:** Method
* **Namespace:** [UnityEditor.iOS.Xcode](/engine/6000.7/script-reference/unityeditor/ios/xcode.md)
* **Assembly:** UnityEditor.iOS.Extensions.Xcode

```csharp
public string AddRemotePackageReferenceAtBranch(string url, string branch)
```

### Parameters

**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): The URL of the repository.**** (\[string]\(https\://learn.microsoft.com/dotnet/api/system.string)): The name of the branch in the repository.

### Returns

| Type                                                           | Description                                       |
| -------------------------------------------------------------- | ------------------------------------------------- |
| [string](https://learn.microsoft.com/dotnet/api/system.string) | Returns the GUID of the remote package reference. |

### Examples

```csharp
using UnityEditor;
using System.IO;
using UnityEditor.Callbacks;
using UnityEditor.iOS.Xcode;

public class Sample_AddRemotePackageReferenceAtBranch  
{
    [PostProcessBuild]
    public static void OnPostprocessBuild(BuildTarget buildTarget, string pathToBuiltProject)
    {

        // Stop processing if build target is not iOS
        if (buildTarget != BuildTarget.iOS)
            return;

        // Initialize PBXProject
        string projectPath = PBXProject.GetPBXProjectPath(pathToBuiltProject);
        PBXProject pbxProject = new PBXProject();
        pbxProject.ReadFromFile(projectPath);

        // Get GUID you want to add the package to
        string mainTargetGuid = pbxProject.GetUnityMainTargetGuid();

        // Get the GUID of the Remote Package using the URL and branch
        string packageGuid = pbxProject.AddRemotePackageReferenceAtBranch("https://github.com/apple/swift-system.git", "main");

        // Add the package to the Xcode project
        pbxProject.AddRemotePackageFrameworkToProject(pbxProject.GetUnityMainTargetGuid(), "SystemPackage", packageGuid, false);

        // Apply changes to the pbxproj file
        pbxProject.WriteToFile(projectPath);
    }
}
```